Users Guide

Table Of Contents
BFD configuration
Before you configure BFD for a routing protocol, first enable BFD globally on both routers in the link. BFD is disabled by default.
OS10 does not support Demand mode, authentication, and Echo function.
OS10 does not support BFD on multi-hop and virtual links.
OS10 supports protocol liveness only for routing protocols.
OS10 BFD supports static and dynamic routing protocols such as static route, OSPF, OSPFv3, and BGP. OS10 supports BFD
on default and non-default virtual routing and forwarding (VRF) instances.
NOTE:
Dell EMC recommends that:
For the S4100-ON series platform, you configure a BFD interval of 500 ms with multiplier of 3 or higher for
multidimensional scaled configurations.
For other series switches, you configure a BFD interval of 200 ms with a multiplier of 4 or higher for multidimensional
scaled configurations.
Configure BFD globally
Before you configure BFD for static routing or a routing protocol, configure BFD globally on each router, including the global
BFD session settings. BFD is disabled by default.
1. Configure the global BFD session parameters in CONFIGURATION mode.
bfd interval milliseconds min_rx milliseconds multiplier number role {active |
passive}
interval milliseconds Enter the time interval for sending control packets to BFD peers, from 50 to 1000. The
default is 200. Dell EMC recommends using more than 100 milliseconds.
min_rx milliseconds Enter the maximum waiting time for receiving control packets from BFD peers, from 50 to
1000. The default is 200. Dell EMC recommends using more than 100 milliseconds.
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